Taxonomic and bioecological investigation of the Malacostraca (Crustacea)) of Coruh basin

In this study, it was aimed to determine the Malacostraca fauna of the Coruh River Basin, which has not been studied previously, and to evaluate the relations of the species determined with some water parameters. In the study, a total of 73 stations consisting of 3 ponds, 4 fountains, 66 creeks and tea were sampled in a total of 3 field works between September 20, 2014 and August 20, 2015, and Malacostraca individuals were encountered in 41 stations. Analyzes of temperature, dissolved oxygen, pH, total dissolved solids (TDS), Nitrite (NO2-N), Ammonium (NH4-N), Phosphate (PO4-P), BOD5 and Chlorophyll a were performed for the sampling stations.As a result of the study; totally 9 species was identified that 7 (Gammarus birsteini, Gammarus fossarum, Gammarus kischineffensis, Gammarus balcanicus, Gammarus pageti, Gammarus sp., Niphargus sp.) belong to the Amphipoda order, 1 (Asellus aquaticus) to Isopoda order and 1 (Potamon ibericum) to Decapoda order. Asellus aquaticus and Potamon ibericum were the first record for the basin, Gammarus sp. and Niphargus sp. are likely new species. The relationship of species with environmental parameters was evaluated and although the number of sampled stations was limited, Gammarus sp., Niphargus sp. and G. pageti species prefer cleaner waters. G. balcanicus, which is stated to be more resistant to environmental parameters in the literature, has been found to be relatively clean in the Coruh Basin. It has been determined that G. birsteini, G. fossarum, G. kischineffensis and P.ibericum species are resistant to certain parameters and A. aqauaticus is the most tolerant species.